File: discriminableUnionWithIntersectedMembers.ts

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// regression test for https://github.com/microsoft/TypeScript/issues/33243
type X = 
 | { x: 'x', y: number } & { y: number } 
 | { x: 'y', y: number, z?: boolean } & { y: number }

// error
const x: X = 4 as any as { x: 'x' | 'y', y: number };

type Y = 
 | { x: 'x', y: number } 
 | { x: 'y', y: number, z?: boolean }

// no  error
const y: Y = 4 as any as { x: 'x' | 'y', y: number };